<template>
    <div class="list" ref="wrap">
        <div>
            <div class="area">
                <div class="title border-topbottom">当前城市</div>
                <div class="btn-list">
                    <div class="btn-wrap">
                        <div class="btn">{{this.city}}</div>
                    </div>

                </div>
            </div>
            <div class="area">
                <div class="title border-topbottom">热门城市</div>
                <div class="btn-list">
                    <div class="btn-wrap" v-for="item of hot" :key="item.id">
                        <div class="btn" @click="handleCityClick(item.name)">{{item.name}}</div>
                    </div>

                </div>

            </div>
            <div class="area" v-for="(item,key) of cities" :key="key" :ref="key">
                <div class="title border-topbottom">{{key}}</div>
                <div class="item-list" v-for="innerItem of item" :key="innerItem.id">
                    <div class="item border-bottom" @click="handleCityClick(innerItem.name)">{{innerItem.name}}</div>

                </div>

            </div>
        </div>

    </div>
</template>
<script>
import {mapState,mapMutations} from 'vuex'
import Bscroll from "better-scroll";
export default {
  name: "CityList",
  props: {
    hot: Array,
    cities: Object,
    letter: String
  },
  computed:{
      ...mapState(['city'])
  },
  methods: {
    handleCityClick(city) {
       this.changeCity(city)
       this.$router.push("/")
    },
    ...mapMutations(['changeCity'])
  },
  mounted() {
    this.scroll = new Bscroll(this.$refs.wrap);
  },
  watch: {
    letter() {
      if (this.letter) {
        const element = this.$refs[this.letter][0];
        this.scroll.scrollToElement(element);
      }
    }
  }
};
</script>
<style lang="stylus" scoped>
@import '~styles/varibles.styl';

.border-topbottom {
    &:before {
        border-color: #ccc;
    }

    &:after {
        border-color: #ccc;
    }
}

.border-bottom {
    &:before {
        border-color: #ccc;
    }
}

.list {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    top: 1.58rem;
    overflow: hidden;
}

.title {
    height: 0.44rem;
    line-height: 0.44rem;
    font-size: 0.26rem;
    background: #eee;
    padding-left: 0.2rem;
    color: #666;
}

.btn-list {
    padding: 0.1rem 0.6rem 0.1rem 0.1rem;
    overflow: hidden;

    .btn-wrap {
        width: 33.33%;
        float: left;

        .btn {
            margin: 0.1rem;
            padding: 0.1rem 0;
            text-align: center;
            border: 0.02rem solid #ccc;
            border-radius: 0.06rem;
        }
    }
}

.item-list {
    .item {
        padding-left: 0.2rem;
        line-height: 0.54rem;
    }
}
</style>
